Hex #99a377 or rgb(153,163,119) in RGB space is the tint of lime. It has hue angle of 73.64 degrees, value = 64 and saturation = 27. #99a377 can be obtained by mixing 4 colors: 2 drops of red, 1 drop of blue, 3 drops of green, 4 drops of white.
Nearest safe hex - #999966. Below you can see the block with #99a377 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #99a377 to the mixer and play with it.